#10
a box contains 21 green marbles. green
marbles make up 15% of all the marbles
in the box. how many total marbles are in
the box? (6.1a, 6.18, 6.1f)

There are 3 green marbles in the box.

Step-by-step explanation:

15% = 0.15

To figure out how much 15% of 21 is, you must multipl the decimal form of the percentage by the whole number. This will give you how much of that number that percentage is.

0.15 * 21 = 3.15  

But you can't have 0.15 of a marble, so you must round as well.

3 green marbles in the box.

the answer would be 1 1/72

step-by-step explanation:

you can rewrite the equation by separating the parts and then solving individually:

10-9=1

1/8 - 1/9=

find l c d and then combine:

1 1/72

898.1666667

step-by-step explanation:

5389/6 = 898.1666667